Keyword: Pneumovax


2. Merck & Co.

While immuno-oncology star Keytruda has generated plenty of headlines for Merck lately, the company's vaccine business has been on the upswing, too, thanks to human papillomavirus shot Gardasil 9.

Merck's Gardasil posts big Q1 beat

​​​​​​​Merck’s vaccines powered ahead to start the year, turning in a 21% surge in sales and helping the drug giant offset other areas of weakness on the way to slight growth overall.